How to Make Fiberglass Plastic Molding
Fiberglass moulds are used to make several copies of shapes that may be difficult. These shapes may be an add size with odd angles. Fiberglass mounds are easy to make, inexpensive, are durable, and can be used to make items that have hundreds of parts. To start the process you have to find something that you wish to make a copy of. In this example it is a vacuum formed cowl for a model kit. The shape can be copied using balsa or foam and a finish is applied to make it look glossy. Plug preparation A plug is needed to make a mound. The plug needs to be the exact shape and size of the final part. Replicas are often made of an existing part. In other cases wood, clay, or other material is used to form the final shape of what is going to be copied. If the plug is made from wood or plaster it is going to have to be sealed with a lacquer or a resin. It is suggested to use PR-301 or PR-311 for this. A coat of mould is also applied. To make sure everything is well sealed it i...